Uncharted 4: A Thief's End - The Puzzle in Scotland (Trials and Tribulations Trophy)

To solve the Puzzle firstly you need to Fill the Bucket with water and place it back to the Maze. You will find the water on your left then pass it to Sam he will place it, Open your Journal to get the Clue and you must have the Black Cross on your left, White on the Right and Big cross on the first Circle with Bucket on the Toplight. Check the Image below if you have any doubts.

When you do it you'll get the Trials and Tribulations Trophy as a reward.